From 788d4a884b4f1d0465e925d0686dc4374eb449b5 Mon Sep 17 00:00:00 2001
From: Colin McMillen <c@16bit.cc>
Date: Sat, 23 May 2015 18:00:49 -0400
Subject: [PATCH] Add an airplane tile.

---
 pewpew.asm |  23 +++++++++++++++--------
 tiles.asm  |  20 ++++++++++++--------
 tiles.pcx  | Bin 1057 -> 1231 bytes
 3 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/pewpew.asm b/pewpew.asm
index c045f86..dadd886 100644
--- a/pewpew.asm
+++ b/pewpew.asm
@@ -70,12 +70,18 @@ Start:
     ; Write something recognizable into our scratch space.
     jsr FillScratch
 
-    ; Start the background color as a lime green.
-    lda #31
-    sta $23
+    ; Start the background color as a sky blue.
     lda #16
+    sta $23
+    lda #31
     sta $24
 
+    ; Player's initial starting location.
+    lda #(256 / 4)
+    sta $20
+    lda #((224 - 8) / 2)
+    sta $21
+
 
 
 MainLoop:
@@ -110,19 +116,20 @@ LoadPaletteAndTileData:
     lda #32  ; Palette entries for BG2 start at 32.
     sta CGADDR
 -    
-    lda.l PaletteData, x
+    lda.l UntitledPalette, x
     sta CGDATA
     inx
     cpx #8  ; 8 bytes of palette data.
     bne -
 
     ; DMA 0 source address & bank.
-    ldx #TileData
+    ldx #UntitledData
     stx DMA0SRC
-    lda #:TileData
+    lda #:UntitledData
     sta DMA0SRCBANK
     ; DMA 0 transfer size.
-    ldy #320  ; See the helpful comment in face.asm.
+    ; See the helpful comment in tiles.asm to find the size of the tile data.
+    ldy #384  
     sty DMA0SIZE
     ; DMA 0 control register.
     ; Transfer type 001 = 2 addresses, LH.
@@ -144,7 +151,7 @@ LoadPaletteAndTileData:
     ; Set word address for accessing VRAM to $6000.
     ldx #$6000  ; BG 2 starts here.
     stx VMADDR
-    ldx #$0002  ; Stick one tile into BG2.
+    ldx #$0004  ; Stick one tile into BG2.
     stx VMDATA
 
     ; Set up the screen. 16x16 tiles for BG2, 8x8 tiles elsewhere, mode 0.
diff --git a/tiles.asm b/tiles.asm
index a6cb685..8b6c29e 100644
--- a/tiles.asm
+++ b/tiles.asm
@@ -1,13 +1,13 @@
 ; Created with eKid's pcx2snes converter ;
 
-TileData:
+UntitledData:
     .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
     .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
     .db $07, $00, $18, $07, $20, $1F, $4C, $33, $50, $2F, $86, $79, $86, $79, $80, $7F
     .db $E0, $00, $18, $E0, $04, $F8, $32, $CC, $0A, $F4, $61, $9E, $61, $9E, $01, $FE
-    .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
-    .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
-    .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
+    .db $10, $00, $28, $10, $A8, $90, $64, $58, $E3, $DC, $30, $0F, $AC, $93, $60, $5F
+    .db $00, $00, $00, $00, $00, $00, $F8, $00, $80, $00, $70, $80, $0E, $F0, $01, $FE
+    .db $80, $00, $80, $00, $80, $00, $80, $00, $80, $00, $80, $00, $80, $00, $80, $00
     .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
     .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
     .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
@@ -21,9 +21,13 @@ TileData:
     .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
     .db $80, $7F, $9F, $60, $9F, $6F, $4F, $37, $47, $38, $20, $1F, $18, $07, $07, $00
     .db $01, $FE, $F9, $06, $F9, $F6, $F2, $EC, $E2, $1C, $04, $F8, $18, $E0, $E0, $00
+    .db $60, $5F, $AC, $93, $30, $0F, $E3, $DC, $64, $58, $A8, $90, $28, $10, $10, $00
+    .db $01, $FE, $0E, $F0, $70, $80, $80, $00, $F8, $00, $00, $00, $00, $00, $00, $00
+    .db $80, $00, $80, $00, $80, $00, $80, $00, $80, $00, $80, $00, $80, $00, $80, $00
+    .db $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00, $00
 
-PaletteData:
-    .db $1F, $7C, $00, $00, $FF, $7F, $1F, $00
+UntitledPalette:
+    .db $1F, $7C, $00, $00, $FF, $7F, $1F, $02
 
-; 20 tiles (12 spaces)
-; 320 bytes
+; 24 tiles (8 spaces)
+; 384 bytes
diff --git a/tiles.pcx b/tiles.pcx
index 61013f9526e08a7f429aa71e4726117a4f161763..37e2b8dd3ceb767686e4cb5a0a58aac8d6d7c6e8 100644
GIT binary patch
literal 1231
zcmeHDTMmLS5S-b@#26DV!X5Nzo~?ySkob(}!QDax>=(brO$+TzcV~AtE3Toj#|{Mx
z+Idm%faOV}!V8f#*n(F);TgrV0)=No9$+K%a3ACjdVNyr_KE3#6@$H3R#=OE;2nbm
zo(#TWNU%gLrxHq)Ib}N5L*T$&w31`1V5;(U_0pJpmZezj`o<<wsddIg%-T~TNYrhU
e&gRMI&pnztxb4uXx1Gij{Ti+QpZ*T~x&v>97ixh3

literal 1057
zcmeHDTMEN443j(tr3`k2?Et<10o*o}evCcXc~UtY%g4U@y&5cJCANjzBO53#IHP07
z;G2S1Y;UR?-bftrf-{-3#}k~5jtA%x2BjOLG)^YK9UnDb`BUABwxZh{-TEV(4uNGZ
fQ{geSx1{8EZ*{UdJ7r|K%?e@ly|euSe{q2Y2D3Pd